Fluid-cooler.



PATENTED AUG '13, 19671 2 SHEETS-SHEET 2.

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FLUID GOOLER.

A. R. & P. S. WELGH.

APPLIOATION FILED JUNE 5. 1905.

'll [TWESSES AILTAIE R. WELGH- AND FRED sTIMsoN WELGH, OFS'PONTIAG, MICHIGAN.

FLUID-COOLER.

Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed June 5,1905- Serial No. 263,724.

To all whom it may concern:

Be it known that we, ALLIE RAY WELCH and FRED S'rrMs0N WELCH, both citizens of the United States, residing at Pontiac, county of Oakland, State of Michigan, have invented a certain new and useful Improvement in Fluid-Coolers, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This inventidn relates to fluid coolers and has for its special object, to provide an improved apparatus for cooling the fluid from the jacket of a gas engine. The present application is in the nature of an improvement upon the device described in my co-pending application, Serial No. 141,108.

In the drawings:Figure l, is a perspective view of a cooler embodying our invention. Fig. 2, is a central vertical cross section of the upper part of the cooler. Fig. 3, is a detail sectional view on the planes, indicated by the line 33 of Fig. 1. Fig. 4, is a detail sectional View of the receptacle into which the cooling fluid is delivered. Fig. 5, is a detail sectional view of the base ofthe cooler. Figs. 6 and 7, are details indicating the construction of the cooler to form the cooling surfaces.

The cooling surfaces consist of a nest of tubes preferably of hexagonal form and cross section having their ends expanded and laid contiguous, as indicated at F, Figs. 1, 6 and 7, and more particularly described in the specification of my application above referred to.

D, is a receptacle which may be a hollow casting 7 located near the top of thenest of tubes F.

O, ,i$ a hollow casting forming a base upon which the nest of tubes Frest. A, A, is a metal strip connecting the base Owith the top B. The strip A passes over the top down the sides of the tubes and bends under the base where it may be secured by screws. The top 13, base 0, and inclosing strip A, A, form a frame inclosing the tubes F and joined to said tubcs along the edges of the front and back faces thereof by water tight joints.

' The interstices between the tubes F atthc top comby a partition b, except near. the sides at which said partition is discontinued.

municate with the cavity of thetop compartment 13 and at the bottom with a cavity (1 of the base 0. The

top 13 is separatedfrom the spaces between the tubes point may be formed in the base casting G and have its inlet opening G communicating with a cavity 0 of said casting. a

G is the exit passage from the pump H.

G, is thepipe leading to the engine/the communicates with the pipe G.

H, is a spindle extending through a stuffing box on the casting C by means of which the centrifu al pump H is operated.

h, are vanes upon the spindle H in the chamber G D, is a receptacle which may be a casting adapted at its center to receive the intake pipe E The casting D is hollow and is provided with holes (1 through its walls. The casting D is of a breadth equal to. the length of a tube F and of depth about equal to the diameter of one 3 passage G of said tubes. Of course the casting Dmay be made of a depth about equal to two or three times the diameter of a tube, and two or three rows of ,tubes may be removed to be replaced by it. The tubes F are secured together to form thenest by soldering or brazing their ends together, and may be easily removed by melting the bindingnraterial whenreqnired. A number of said tubes are removed below the top of the nest to leave a space'of the approximate form and size of the casting D and said casting is inserted therein and secured in place by soldering or brazing; the pipe E is then connected with said casting.

The operation of the above described device is as follows:--Thc spindle H is rapidly rotated bypower from the engine through a belt, gearing, or the like to operate the centrifugal pump H, this draws the cooling fluid from the cavityG of the base 0, which fluid is supplied from the passages between the tubes F along the entire lower surfaces of said nest of tubes. The pump delivers the fluid through the passage G to the circulating pipe G from whence it is conveyed to the engine in the well understood method, which is therefore not illustrated, and after it has withdrawn heat from said engine, it re .turns to the cooler through the pipe E and is delivered into the casting D and distributed through the-apertures d beneath the upper edges of the nest of tubes, thus any steam that may be formed will be condensed before it can pass up through the tubes above the casting D and along the partition I) to the openings at the end of said partition and thereforewill not be discharged through the opening b'-'. The hot fluid then descends through the passages between the tubes, being cooled in said passages and again delivered to the cavity of the base O, and the operation above described is repeated.

What we claim is:

I. In a cooler consisting of a plurality of tubes for the passage of a cooling medium and having circulating passages therebetween and an inclosing frame, a hollow casting forming a part of said frame having its hollow comnmnicating with said passuges'i'a pump chamber forming part of said casting and having a passage communicating with said hollow through \vhieh passage the pump is adapted to cause a tluid to ilow.

2. in a ('ooler eonsisting of a plurality of tubes for the p. go of a (ooiillg medium and having; rirrulating passages therein-tween and an int-losing frame. a hollow easting forming a part of said frame having its hollow conimuniealing with said passages a eylindrieal chamber formed in said casting. a ventral passage leading from said ryiindrieal ehamher to the hollow of said 0- sting. a peripheral aperture leading from said chamber and opening to the outside of said (as-ting. and a rotatable vane in said \'lindri('al ehaniher 3i. eooler eons ting: of a plurality of tubes for the pass go of a eoolinp; medium and having circulating passages therehetween. said cooler living provided with a hollow rel-eplarle intermediate said t'uhes. said receptacle being provided with a pipe opening to its hollow. said re eeptaele being also provided with openings,through its wall eonununicatingwith said circulating passages.

4. in a cooler. eonsistina of a plurality of tubes for the "e of a cooling medium. and having;- circulating passages therehetween, a receptacle located intermediate said tubes and secured to the same to hold it. in place. said ret'eptat-le being adapted io receive the iluid to be cooled as pass:

it enters said cooler and to distribute the same to said reulating' passages.

3. In a cooler consisting of a plurality of tubes for the passaa'e of a cooling medium and having circulating passa;., s therehetween and an inclosing frame. a hollow casting forming a part of said frame. a pump chamber forming; part of said casting and ha ing:- a passage eonnnunicating with the hollow therein through which it is adapted to artuat'e a lluid.

ti. In a cooler consisting of a plurality of tubes for the passage of a cooling medium and having cireulating passages therehetween and an inclosing frame. a hollow casting forming a part of said frame having its hollow conimunicating throughout its length with said passages. a pump ehnmher forming partat said rusting and having a passage ronnnunirating with said hollow through which it is adapted to artuattga tluid.

in testimony whereof. we sign this specification in the presence of two witnes.

ALLIIG it. \VEIAII. Flti il) S'IIMSON \VIGIKH.

Witnesses l l.oiucs 'n S. Loeiuvoon, FLORA McLmN. 

